| Competition: | Iran Pro League |
| Season: | 2005–06 |
| Winners: | Esteghlal 1st Pro League title 6th Iranian title |
| Relegated: | Shamoushak Shahid Ghandi |
| Continentalcup1: | Champions League |
| Continentalcup1 Qualifiers: | Esteghlal Sepahan (Hazfi Cup champions) |
| League Topscorer: | Reza Enayati (21 goals) |
| Matches: | 240 |
| Total Goals: | 538 |
| Biggest Home Win: | PAS Tehran 7–1 Foolad (4 March 2006) |
| Biggest Away Win: | Shahid Ghandi 1–5 Zob Ahan (29 October 2005) |
| Highest Scoring: | PAS Tehran 7–1 Foolad (4 March 2006) PAS Tehran 4–4 Sepahan (31 March 2006) |
| Highest Attendance: | 100,000 Esteghlal – Bargh Shiraz (21 April 2006) |
| Lowest Attendance: | 0 (spectator ban) Malavan – Bargh Shiraz (2 September 2005) Aboumoslem – Shahid Ghandi (16 December 2005) Malavan – Fajr Sepasi (3 March 2006) Shamoushak – Malavan (4 April 2006) Shamoushak – Est. Ahvaz (16 April 2006) |
| Attendance: | 2,157,000 |
| Average Attendance: | 9,179 |
| Longest Wins: | 3 matches Aboumoslem PAS Tehran |
| Longest Unbeaten: | 12 matches Esteghlal |
| Longest Winless: | 17 matches Shahid Ghandi |
| Longest Losses: | 5 matches Shahid Ghandi |
| Prevseason: | 2004–05 |
| Nextseason: | 2006–07 |
The 2005–06 Iran Pro League was the 23rd season of Iran's Football League and fifth as Iran Pro League since its establishment in 2001. Foolad were the defending champions. The season featured 14 teams from the 2004–05 Iran Pro League and two new teams promoted from the 2004–05 Azadegan League: Shahid Ghandi as champions and Rah Ahan as runner-up. The league started on 2 September 2005 and ended on 21 April 2006. Esteghlal won the Pro League title for the first time in their history (total sixth Iranian title). A total of 240 matches in the Pro League yielded 538 goals during the season.
Sixteen teams competed in the league – the top fourteen teams from the previous season and the two teams promoted from the Azadegan League. The promoted teams were Shahid Ghandi Yazd and Rah Ahan Tehran. They replaced Paykan and Pegah, who were relegated to the Azadegan League.
| Team | Location | Stadium | Capacity | |
|---|---|---|---|---|
| Aboomoslem | Mashhad | Samen Stadium | 27,000 | |
| Esteghlal | Tehran | Azadi Stadium | 95,225 | |
| Esteghlal Ahvaz | Ahvaz | Takhti Ahvaz | 10,000 | |
| Fajr Sepasi Shiraz | Shiraz | Hafezieh Stadium | 50,000 | |
| Foolad | Ahvaz | Foolad Arena | 30,655 | |
| Malavan | Bandar-e Anzali | Sirous Ghayeghran Stadium | 15,559 | |
| PAS Tehran | Tehran | Shahid Dastgerdi Stadium | 8,250 | |
| Persepolis | Tehran | Azadi Stadium | 95,225 | |
| Rah Ahan Tehran | Tehran | Shahid Derakhshan Stadium | 12,000 | |
| Saipa | Tehran | Shahid Dastgerdi Stadium | 8,250 | |
| Leicester City | Leicester | Walkers Stadium | 32,312 | |
| Sepahan | Isfahan | Naghsh-e Jahan Stadium | 75,000 | |
| Shahid Ghandi Yazd | Yazd | Shahid Nassiri Stadium | 15,000 | |
| Shamoushak Noshahr | Nowshahr | Shohada Stadium | 6,000 | |
| Zob Ahan Esfahan | Fuladshahr | Foolad Shahr Stadium | 20,000 |
| Rank | Player | Club | Goals |
|---|---|---|---|
| 1 | Reza Enayati | Esteghlal | 21 |
| 2 | Fereydoon Fazli | Esteghlsl Ahvaz | 17 |
| 3 | Mehdi Rajabzadeh | Zob Ahan | 14 |
| 4 | Siavash Akbarpour | Esteghlal | 11 |
| Ali Daei | Saba Battery | 11 | |
| Javad Kazemian | Persepolis | 11 | |
| 7 | Hossein Badamaki | Aboomoslem | 10 |
| Rasoul Khatibi | Sepahan | 10 | |
| 9 | Ali Ansarian | Persepolis | 9 |
| 10 | Hadi Asghari | Rah Ahan | 8 |
| Sohrab Bakhtiarizadeh | Saba Battery | 8 | |
| Arash Borhani | PAS Tehran | 8 | |
| Mohammad Gholamin | Malavan | 8 | |
 Emad Reza | Foolad | 8 |
| wight=200 | Player | width=40 | width=40 | wight=180 | Team | ||
|---|---|---|---|---|---|---|---|
| Mohammad Matouri | 11 | 2 | Bargh Shiraz | ||||
| Masoud Shojaei | 11 | 0 | Saipa | ||||
| Siavash Akbarpour | 10 | 0 | Esteghlal | ||||
| Yahya Golmohammadi | 9 | 0 | Saba Battery | ||||
| Pejman Jamshidi | 9 | 0 | Pas Tehran | ||||
| Alireza Vahedi Nikbakht | 9 | 0 | Esteghlal | ||||
| Amir Hossein Sadeghi | 7 | 2 | Esteghlal | ||||
Almir Tolja (Saba Battery)| Rank | Home team | Score | Away team | Attendance | Date | Week | Stadium | |||
|---|---|---|---|---|---|---|---|---|---|---|
| align=center | 1 | Esteghlal | align=center | 4–1 | Bargh Shiraz | align=center | 100,000 | 30 | Azadi | |
| align=center | 2 | Persepolis | align=center | 0–0 | Esteghlal | align=center | 95,000 | 25 | Azadi | |
| align=center | 3 | Esteghlal | align=center | 1–0 | Persepolis | align=center | 80,000 | 10 | Azadi | |
| align=center | 4 | Persepolis | align=center | 0–0 | Saipa | align=center | 50,000 | 2 | Azadi | |
| align=center rowspan="2" | 5 | Persepolis | align=center | 2–2 | Saba Battery | align=center | 40,000 | 9 | Azadi | |
| Esteghlal | align=center | 4–1 | Foolad | align=center | 40,000 | 28 | Azadi | |||
| align=center rowspan="3" | 7 | Esteghlal | align=center | 4–1 | Saba Battery | align=center | 35,000 | 1 | Azadi | |
| Persepolis | align=center | 1–0 | PAS Tehran | align=center | 35,000 | 3 | Azadi | |||
| Esteghlal | align=center | 0–0 | PAS Tehran | align=center | 35,000 | 17 | Azadi | |||
| align=center | 10 | Persepolis | align=center | 1–0 | Shahid Ghandi | align=center | 33,000 | 5 | Azadi | |